Home / 8,170.96-11,248.32-7,382.56

Finding the Fourth Proportional to 8,170.96, 11,248.32 and 7,382.56

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Solution

The fourth proportional to 8,170.96, 11,248.32 and 7,382.56 is: 10,162.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,170.96 : 11,248.32 = 7,382.56 : x
  2. Step 2: Convert to fraction form
    8,170.96/11,248.32 = 7,382.56/x
  3. Step 3: Cross multiply
    8,170.96x = 11,248.32 × 7,382.56
  4. Step 4: Simplify right side
    8,170.96x = 83,041,397.30
  5. Step 5: Solve for x
    x = 83,041,397.30/8,170.96
  6. Step 6: Final answer
    x = 10,162.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.